Malicious PDF — malware analysis report

Static analysis result for SHA-256 db883568c8c32516…

MALICIOUS

PDF

364.6 KB Created: 2015-08-21 09:17:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 17c0d11e5623ea5dd2016a2dd02274d4 SHA-1: 688134413045b5642cfd24e11d33ab90e0353190 SHA-256: db883568c8c32516caf315b3958151317bad3cf8d270d1d795d15c13f3caae9e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. The embedded URL `http://botcraftman.ru/` is the primary indicator of malicious intent, suggesting the document is designed to lure users to a compromised or malicious site. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 2

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://botcraftman.ru/?lip&keyword=%D0%BA%D0%BE%D0%B4%D1%8B+%D0%BE%D1%88%D0%B8%D0%B1%D0%BE%D0%BA+%D0%BD%D0%B0+%D0%BE%D0%BF%D0%B5%D0%BB%D1%8C+%D0%B2%D0%B5%D0%BA%D1%82%D1%80%D0%B0+%D0%B0&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654694_shkolnica_3_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654682_skachat_programmu_torrent_3x_speed.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654675_dnevniki_vampira_10_kniga_ohotniki_obretaya_sudbu_skachat.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005699a.bin
632e86be6fe95eeefb9edc2da65595f0e8feafc5047cac90a2f6441126f39122		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5699A 8724 bytes
font_01_sfnt_off000582cb.bin
cdc90a6a937f9f3830adf033d9fefa15ed2b775176af3a91a40c1ef61b270feb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x582CB 15644 bytes

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